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CVE-2017-14492
critical
CVSS 9.8
Buffer Overflow in dos (CVE-2017-14492)
Summary
vulnerability in dos (CVE-2017-14492). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2017-14492** has been found in dos.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "dos CVE-2017-14492" on the vendor's site.
CVE-2017-14492 (dos) — CWE-119 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (CWE-119) exists in dos.
📍 Affected scope
dos — .
🔥 Severity
Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'dos' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'dos' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `dos` を grep し、稼働しているサービス・バージョンを把握する。
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7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- advisory http://thekelleys.org.uk/dnsmasq/CHANGELOG
- advisory http://www.debian.org/security/2017/dsa-3989
- advisory http://www.securityfocus.com/bid/101085
- advisory http://www.securitytracker.com/id/1039474
- advisory http://www.ubuntu.com/usn/USN-3430-1
- advisory http://www.ubuntu.com/usn/USN-3430-2
- advisory https://security.gentoo.org/glsa/201710-27
- advisory https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- advisory https://www.exploit-db.com/exploits/42942/
- advisory https://www.kb.cert.org/vuls/id/973527
- patch https://access.redhat.com/errata/RHSA-2017:2836
- patch https://access.redhat.com/errata/RHSA-2017:2837
- report http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
- report https://access.redhat.com/security/vulnerabilities/3199382
- web http://nvidia.custhelp.com/app/answers/detail/a_id/4561
- web http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=24036ea507862c7b7898b68289c8130f85599c10
- web http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
- web https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
- web https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
- web https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq